planaria :

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  • n  free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts

  • The original choice of title was not made lightly, says Psychologist-Editor James McConnell, who heads the University of Michigan planarian (flatworm) research group, which .
  • McConnell works with planaria, or flatworms, conditioning them by electrical shock to contract when a light is flashed.
  • Because, says Ardrey, the dispossessed planarian worm lost his zest for life and slipped this attitude into the evolutionary stream untold millions of years ago.

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